Remove document whose value is matched with $eq from a MongoDB collection?

Remove document using remove(), whose value is matched with $eq from a MongoDB collection. The $eq operator matches documents where the value of a field equals the specified value.

Let us create a collection with documents −

> db.demo626.insertOne({id:1,"Name":"Chris"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5e9ac6376c954c74be91e6ae") } > db.demo626.insertOne({id:2,"Name":"David"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5e9ac63e6c954c74be91e6af") } > db.demo626.insertOne({id:3,"Name":"Bob"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5e9ac6436c954c74be91e6b0") } > db.demo626.insertOne({id:4,"Name":"Mike"}); {    "acknowledged" : true,    "insertedId" : ObjectId("5e9ac6486c954c74be91e6b1") }

Display all documents from a collection with the help of find() method −

> db.demo626.find();

This will produce the following output −

{ "_id" : ObjectId("5e9ac6376c954c74be91e6ae"), "id" : 1, "Name" : "Chris" } { "_id" : ObjectId("5e9ac63e6c954c74be91e6af"), "id" : 2, "Name" : "David" } { "_id" : ObjectId("5e9ac6436c954c74be91e6b0"), "id" : 3, "Name" : "Bob" } { "_id" : ObjectId("5e9ac6486c954c74be91e6b1"), "id" : 4, "Name" : "Mike" }

Following is the query to remove document from collection −

> db.demo626.remove({Name:{$eq:"Bob"}}); WriteResult({ "nRemoved" : 1 })

Display all documents from a collection with the help of find() method −

> db.demo626.find();

This will produce the following output −

{ "_id" : ObjectId("5e9ac6376c954c74be91e6ae"), "id" : 1, "Name" : "Chris" } { "_id" : ObjectId("5e9ac63e6c954c74be91e6af"), "id" : 2, "Name" : "David" } { "_id" : ObjectId("5e9ac6486c954c74be91e6b1"), "id" : 4, "Name" : "Mike" }